Increase the current density and reduce the defects of ZnO by modification of the band gap edges with Cu ions implantation for efficient,flexible dye-sensitized solar cells (FDSSCs) |
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| Affiliation: | 1. Department of Physics, The University of Lahore, 53700, Pakistan;2. Department of Physics, Science Unit, Deanship of Educational Services, Qasim University, Buraidah, 51452, Saudi Arabia;3. Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia;4. Department of Physics, College of Sciences, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia;1. Materials Science Lab. (1), Physics Department, Faculty of Science, Cairo University, Giza, Egypt;2. Department of Physics, College of Sciences and Humanities, Shaqra University, Al Quwayiyah, 19257, Saudi Arabia;3. Department of Physics, Faculty of Applied Science, Umm AlQura University, AlZahir Branch, Makkah, 24383, Saudi Arabia;1. College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an, 710055, China;2. School of Civil Engineering and Architecture, Xi''an University of Technology, Xi’an, 710048, China;1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China;2. Zhongyuan Critical Metals Laboratory, Zhengzhou, 450001, China;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China;2. AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu, China;1. School of Integrated Circuits, Huazhong University of Science and Technology, Wuhan, 430074, PR China;2. Zhejiang Engineering Research Center of New Organic Functional Molecules Synthesis and Application, Wenzhou Institute of Industry & Science, Wenzhou, 325006, PR China;3. Wenzhou Advanced Manufacturing Institute, Huazhong University of Science and Technology, Wenzhou, 325006, PR China;1. Sate Key Laboratory of Materials Processing and Die & Mould Technology School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Sichuan University, Chengdu, 610213, China |
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| Abstract: | Flexible dye-sensitized solar cells (FDSSCs) have good potential in future photovoltaic technology. The spin coating method deposited the ZnO films on indium-tin-oxide-coated polyethylene terephthalate (ITO-PET) flexible plastic substrates. These films are implanted with Cu-ions with 1 × 1013 ions/cm2, 1 × 1014 ions/cm2, and 1 × 1015 ions/cm2. All the films have a hexagonal structure. The film irradiated with 1 × 1014 ions/cm2 showed high crystallinity and crystallite size. Important optical properties like bandgap energy (Eg), band edges, refractive index, extinction coefficient, and dielectric constants are measured by UV–Vis spectroscopy. Bandgap energy decreases, and the refractive index increases at the fluence of Cu ions. The maximum decrease in Eg is observed at the 1 × 1014 ions/cm2 dose. Photoluminescence spectra suggest that defects-related emission peaks are decreased at 1 × 1014 ions/cm2 Cu ions fluency. J-V measurements have significantly improved photovoltaic performance compared to pristine ZnO-based solar cells. The highest efficiency (2.30%) is observed at a 1 × 1014 ions/cm2 dose. The efficiency increase is related to improving the charge transfer ratio and shifting the fermi level toward the conduction band. |
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| Keywords: | Photoluminescence spectra Solar cells Electrochemical electrodes Cu implantation X Ray Diffraction |
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